Hollow-bar piles
Hollow bar piles consist of three main components: the pile head, the steel tendon or compression member – including coupler and single-use drill bit – and the grout body. The steel tendon or compression member is a hollow steel bar with cold-rolled round thread and can therefore be cut or joined at any point.
Structure
Hollow-bar piles consist of three main components:
- Pile head
- Steel tendon or compression member – including coupler and the core drill bit
- Grout body
The steel tendon or compression member is a hollow bar with cold-rolled round or trapezoidal thread and can therefore be cut or coupled at any point.
Features
- Nationally approved system with internal and external quality control
- Easy to adapt to transport and assembly conditions due to delivery in sections with couplers
- A large range of drill bits permits use in a wide variety of soils. Easy to adjust to the required length on site, e.g. for varying geological conditions, by using sections with couplers
- Excellent bond between the SHS bar and cement mortar thanks to the use of thread ribs
- Easy to adapt to the required loads thanks to a wide range of cross-sections
- Fast completion of construction work thanks to the pile being drilled, installed and grouted in a single operation
- Transfer of tensile, pressure and alternating loads
Structural variants
– Short-term pile (piles for temporary use)
– Short-term pile (service life up to 2 years)
– Permanent pile, untreated, allowing for a soil-dependent corrosion rate (service life up to 50 years)
– Permanent pile, hot-dip galvanised, allowing for a soil-dependent corrosion rate (service life up to 50 years)